space_info space(const path& p); space_info space(const path& p, error_code& ec) noexcept;
Returns: An object of type space_info. The value of the space_info object is determined as if by using POSIX statvfs to obtain a POSIX struct statvfs, and then multiplying its f_blocks, f_bfree, and f_bavail members by its f_frsize member, and assigning the results to the capacity, free, and available members respectively. Any members for which the value cannot be determined shall be set to static_cast<uintmax_t>(-1). For the signature with argument ec, all members are set to static_cast<uintmax_t>(-1) if an error occurs.
Remarks: The value of member space_info::available is operating system dependent. [ Note: available may be less than free. — end note ]
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